大孔强酸性树脂吸附硫脲金  

Adsorption of Thiourea Gold in Acidic Thiourea Leaching Liquor by D072 Macroporous Strong Acid Resin

作　　者：胡小玲[1] 张生[1] 管萍[1] 张新丽[1] 

机构地区：[1]西北工业大学化学工程系,陕西西安710072

出　　处：《过程工程学报》2004年第5期397-400,共4页The Chinese Journal of Process Engineering

摘　　要：研究了D072大孔强酸性阳离子交换树脂从硫脲[Tu=CS(NH2)2]浸金液中吸附Au(Tu)2的+性能和机理.结果表明,=2.0时,树脂对Au(Tu)2有优良的吸附性能,金的交换容量为78.95mg/gpH+(Au/干树脂),吸附的硫脲金可用乙醇-硫酸水溶液洗脱,洗脱率可达96.5%.D072树脂对Au(Tu)2+的吸附符合Langmuir吸附模型.The adsorption and exchange properties of thiourea gold complex by D072 macroporous strong acidic resin from a weak acid solution were investigated. The results showed that resin D072 could effectively adsorb Au(Tu)2 ions (Tu=thiourea) at 25℃. The static saturated adsorption capacity of the resin could reach 78.95 mg/g + (Au/resin). The adsorption rate was 98.4%. The loaded resin could be qualitatively eluted with 94% alcohol, 2% sulfuric acid solution and 4% water, the elution rate of thiourea gold was 96.5%. The adsorption isotherm line was of the Langmuir type. The eluted resin was regenerated with 5% Na2S2O3 solution. The adsorption capacity of the regenerated resin was uniform.

关 键 词：树脂 硫脲金 吸附 洗脱 

分 类 号：O652.4[理学—分析化学]